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公开(公告)号：US10963094B2
公开(公告)日：2021-03-30
申请号：US16662009
申请日：2019-10-23
发明人： Hui-Min Wang , Ren-Hao Ye
IPC分类号： G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1335 , G06F3/0354
摘要： A touch-and-display device operated with an active stylus is provided. The touch-and-display device includes a touch-and-display panel and a circuit. In a touch sensing period, the circuit transmits a touch sensing signal to multiple sensing electrodes and determines at least one touched electrode and at least one untouched electrode of the sensing electrodes based on capacitance of the sensing electrodes. In a stylus sensing period, the circuit transmits an uplink signal to the untouched electrodes and applies a direct current voltage to the touched electrodes. The uplink signal is a time-varying signal.
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2.发明授权公开(公告)号：US10684724B1
公开(公告)日：2020-06-16
申请号：US16262843
申请日：2019-01-30
发明人： Yaw-Guang Chang , Hui-Min Wang , Ren-Hao Ye
IPC分类号： G06F3/041
摘要： The present invention provides an in-cell touch panel sensing system and a sensing method. The in-cell touch panel sensing system comprises sensing arrays. Each sensing array comprises: sensor plates; a first multiplexer (MUX), a first analog-to-digital converter (ADC), a second MUX, a second ADC, a third MUX, a third ADC, a fourth MUX, and a fourth ADC. The first MUX is coupled to a first row of the sensor plates and a first column of the sensor plates. The first ADC is coupled to the first MUX. The second MUX is coupled to a second row of the sensor plates and a second column of the sensor plates. The third MUX is coupled to a third row of the sensor plates and a third column of the sensor plates. The fourth MUX is coupled to a fourth row of the sensor plates and a fourth column of the sensor plates.
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公开(公告)号：US11494038B2
公开(公告)日：2022-11-08
申请号：US17026296
申请日：2020-09-20
摘要： A touch panel includes a cover lens located at top of the touch panel, plural touch sensor units, and plural sensing channels. The touch sensor units are disposed below the cover lens and arranged in rows and columns. The touch sensor units are disposed on the sensing channels. Each of touch sensor units acquires a sensing magnitude for identifying a position of the cover lens that touched by the stylus according to signals outputted by the sensing channels. The sensing magnitude of one of the touch sensor units is composed of the signals of the adjacent sensing channels located within a vertical projection of the one of the touch sensor units.
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公开(公告)号：US10976857B1
公开(公告)日：2021-04-13
申请号：US16819156
申请日：2020-03-15
发明人： Yaw-Guang Chang , Hui-Min Wang
IPC分类号： G06F3/041 , G02F1/1333
摘要： A method and apparatus for driving a touch display driver integrated circuit (TDDI) of a touch-sensitive display panel are provided. The method may include: in a display phase of the touch-sensitive display panel, utilizing a reference voltage generator to generate a reference voltage having a predetermined voltage level to be a common voltage of the touch-sensitive display panel, and utilizing a common voltage operational amplifier (OPAMP) to drive the common voltage to the TDDI IC through a common voltage path, for performing display control of the touch-sensitive display panel; and in a touch-sensing phase of the touch-sensitive display panel, utilizing a touch-sensing waveform generator to generate a touch-sensing waveform signal carrying at least one touch-sensing waveform, and utilizing the common voltage OPAMP to drive the touch-sensing waveform signal to the TDDI IC through the common voltage path, for performing touch-sensing control of the touch-sensitive display panel.
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公开(公告)号：US12096557B2
公开(公告)日：2024-09-17
申请号：US17573102
申请日：2022-01-11
发明人： Hui-Min Wang , Yaw-Guang Chang
CPC分类号： H05K1/117 , H05K1/14 , H05K2201/10136
摘要： A pad configuration adaptable to a display system includes a plurality of input bond pads, via which a driver of the display system is mounted and signals are inputted to the driver; and a plurality of output bond pads, via which the driver is mounted and signals are outputted to a display panel of the display system. Input and output bond pads corresponding to one of two neighboring drivers are point symmetric with input and output bond pads corresponding to the other of the two neighboring drivers.
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公开(公告)号：US20230225051A1
公开(公告)日：2023-07-13
申请号：US17573102
申请日：2022-01-11
发明人： Hui-Min Wang , Yaw-Guang Chang
CPC分类号： H05K1/117 , H05K1/14 , H05K2201/10136
摘要： A pad configuration adaptable to a display system includes a plurality of input bond pads, via which a driver of the display system is mounted and signals are inputted to the driver; and a plurality of output bond pads, via which the driver is mounted and signals are outputted to a display panel of the display system. Input and output bond pads corresponding to one of two neighboring drivers are point symmetric with input and output bond pads corresponding to the other of the two neighboring drivers.
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7.发明授权公开(公告)号：US11294497B2
公开(公告)日：2022-04-05
申请号：US16662007
申请日：2019-10-23
发明人： Hui-Min Wang , Ren-Hao Ye
IPC分类号： G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1335 , G06F3/0354
摘要： The touch-and-display panel includes multiple sensing electrodes in the display area. A circuit is disposed in the non-display area and electrically connected to the sensing electrodes through sensing lines. A peripheral electrode is disposed in the non-display area. In a display period, the circuit applies a common voltage to the sensing electrodes through the sensing lines. In a touch sensing period, the circuit transmits a touch sensing signal to the sensing electrodes through the sensing lines, and determines whether each of the sensing electrodes is touched based on capacitance of the sensing electrodes. In a stylus sensing period, the circuit transmits an uplink signal to the sensing electrodes and the peripheral electrode, and receives a downlink signal from the active stylus through the sensing electrodes, and determines a stylus location corresponding to the active stylus according to the downlink signal.
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公开(公告)号：US10802648B1
公开(公告)日：2020-10-13
申请号：US16653892
申请日：2019-10-15
发明人： Hui-Min Wang , Yaw-Guang Chang
摘要： A charge-pump circuit includes a clock generator that generates a clock signal; a sensing waveform generator that generates a sensing signal; a first diode having a cathode electrically connected to a predetermined low voltage; a first capacitor having a first plate electrically coupled to receive the clock signal, and a second plate electrically connected to an anode of the first diode; a second diode having a cathode electrically connected to the second plate of the first capacitor; and a second capacitor having a first plate electrically coupled to receive the sensing signal, and a second plate electrically connected to an anode of the second diode at an output node. The clock signal being generated in a charge-pump period alternates in time with the sensing signal being generated in a touch-sensing period.
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公开(公告)号：US10146379B2
公开(公告)日：2018-12-04
申请号：US15097232
申请日：2016-04-12
发明人： Hui-Min Wang , Yaw-Guang Chang
摘要： A touch screen includes a display, a touch sensor disposed above or within the display, and a conductive layer disposed under the display for detecting pressure.
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公开(公告)号：US20170147102A1
公开(公告)日：2017-05-25
申请号：US15097232
申请日：2016-04-12
发明人： Hui-Min Wang , Yaw-Guang Chang
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0414 , G06F3/0416 , G06F2203/04105
摘要： A touch screen includes a display, a touch sensor disposed above or within the display, and a conductive layer disposed under the display for detecting pressure.
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